1-20 of 6769 Search Results for

Rock acoustic velocities and pressure

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13877215
... acoustic velocities under the same pressure condition and vice versa. This is because the density of calcite is higher than coal rock itself, so the density of coal will become higher due to the calcite filling. However, we are not able to set a positive correlation between acoustic velocity and calcite...
Proceedings Papers

Paper presented at the SPE Middle East Oil and Gas Show and Conference, March 18–21, 2019
Paper Number: SPE-194753-MS
... properties. In this reseach, the primary objective is to analyze the texture, mineralogy, porosity and permeability data of outcrop carbonate rock samples to study the impact of confining pressure on wave velocities. Furthermore, an empirical correlation is proposed for relating porosity with acoustic...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-384
... fracture model of specimen under different pressures and different angles were carried out. The variation of p-wave velocity in fractured rock mass and axial stress-strain relationship in the whole test procedure was also studied. Based on damage mechanics principle and the acoustic wave propagation...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2038
... changes. Similar concept when relating the velocity and Porosity and rock compaction are two of the main effective stress changes to the elastic modulus of the rock. parameters that control the subsurface seismic responses. From a geomechanical standpoint, pressure changes These parameters are influenced...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-119
... 3509 6410 1.83 3. RESULTS AND DISCUSSION 3.1 Acoustic properties Detail analysis of the carbonate rock samples acoustic wave properties includes P-wave and S-wave velocity before and after artificial prepare cracks, P-wave velocity under different confining pressure conditions and uniaxial compression...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0199
... temperature for 7 days under pressure of 8 MPa so DOI httpdx.doi.org/10.1190/segam2013-0199.1© 2013 SEG SEG Houston 2013 Annual Meeting Page 2797 Micrite effect on acoustic velocities and their pressure sensitivity that they could each consolidate to form a cohesive rock. The set up for the cold-pressing...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1847
... including cementation 100% 10% 30% 60% 1-Sw 100% and dissolution continuously alter the pore structures to create and destroy porosity (Harris et al 1985). This in brine CO2 CO2 CO2 CO2 turn affect the elastic properties of the rock, and therefore the sonic velocity (Eberli et al 2003). Hence, aside from...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-786
... phases of loading the acoustic velocities slightly increased. As the deformation neared the peak stress on the stress-strain curve, a centralized diffused low velocity zone developed. As the rock failed the low velocity zone increased in intensity and in the post peak failure region the sample exhibited...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 1–3, 2016
Paper Number: URTEC-2456151-MS
... lamination, pore structure as well as the distribution and maturity of the organic matter which influence the rock properties and wave velocities. In this paper, the influence of rock composition, organic matter (TOC) and orientation of formation lamination on acoustic velocity in organic-rich shales...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427203
... with driving chemo-mechanical processes. Here we present an experimental study that focuses on the acoustic velocity signatures associated with geochemical and mechanical fracture alterations in the form of fracture acidizing and propping. Our experiments help create the rock physics basis for correlating...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 26–29, 2020
Paper Number: SPE-202032-MS
... to identify the basement part of paleogenic clays with high content of organic matter up to 10% (red in Fig. 2 ), which causes sharp decrease of acoustic velocity due to changes in fluid-mineral composition of rocks rather than abnormally high pore pressure. The final RPT template was provided...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-330
...-effective stress relationship for pore pressure prediction. An empirical relationship between the velocity-stress plateau and the porosity is derived using a worldwide dataset of laboratory acoustic velocity measurements as a function of effective stress on siliciclastic rocks with a range of porosities...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-447
... of acoustic characteristics and mechanical properties of rock, but hardly on coal. Winkler K W and Nur A. (1982), Xiong et al (2011), proposed that there were obvious changes in the rock mechanics properties while reaching the critical confining pressure and saturation. Shi and Xu (1995), Wang et al (2006...
Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1911
..., we investigated shale anisotropy from the velocity model; rock breakdown from wellbore pressure; and the ScCO2 fracturing associated focal mechanism from microseismicity. Finally, we interpreted the ScCO2 induced change based on the X-ray computed tomography (CT) of the shale sample pre and after...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5371-MS
... dioxide at 27 ° C. High capillary pressure within the nano-pores in partially saturated shale samples strengthens rock grain contacts thereby increasing both shear and compressional wave velocities. We observe an initial decrease in compressional velocity as pore pressure increases before condensation...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1584
... of rock such as compaction, porosity and electrical properties. Figure 3. Offset gather at well #KGS 1-32 3.1 Pressure effect on sonic log The sonic log is sensitive to pressure changes since there is a relation between porosity, compaction, acoustic parameters and pore pressure (Chopra and Huffman 2006...
Proceedings Papers

Paper presented at the 4th ISRM Young Scholars Symposium on Rock Mechanics, May 10–13, 2017
Paper Number: ISRM-YSS-2017-008
... fracturing stimulation design. Keywords: in -situ stress measurement, anisotropy of acoustic velocity, viscous remanent magnetization, Kaiser effect, rock mechanics, 1. Introduction Knowledge of the in situ stress in rock mass is required in the design of wellbore stability, wellbore structure design...
Proceedings Papers

Paper presented at the SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition, October 29–31, 2019
Paper Number: SPE-196269-MS
... soil on the propagation velocity of acoustic wave in rock and soil is revealed. The simulation experiments also show the relationship between the pressure and porosity changes in shallow water formation and the propagation velocity of acoustic wave. As a result, a template for predicting...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1422
..., acoustic velocity of the Newark basin sedimentary rocks increases with increasing confining pressure (Pc) and axial stress. The degree of this response varies significantly from sample to sample with some showing less than 1% change in Vp with a doubling of Pc from 10.3 to 20.7 MPa, and then to 41.4 MPa...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-1883
... property reservoir characterization quality factor ultrasonic frequency rock sample ultrasonic velocity log analysis ultrasonic measurement sandstone different pore fluid well logging berea sandstone saturation upstream oil & gas acoustic measurement reservoir sandstone The influence...

Product(s) added to cart

Close Modal